foo.cc: In function 'int main()':
foo.cc:46:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   46 | scanf("%d%d", &N, &C);
      | ~~~~~^~~~~~~~~~~~~~~~
foo.cc:47:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   47 | for(int i = 1; i <= N; i++) scanf("%d", &o[i].d);
      |                             ~~~~~^~~~~~~~~~~~~~~
foo.cc:48:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   48 | for(int i = 1; i <= N; i++) scanf("%d", &o[i].v);
      |                             ~~~~~^~~~~~~~~~~~~~~
foo.cc:49:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   49 | for(int i = 1; i <= N; i++) scanf("%d", &o[i].p);
      |                             ~~~~~^~~~~~~~~~~~~~~

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